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Section 3: PI Curve Data

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PI Curve Defined

PI Curve documents the point of intersection of two straight route segments and the delta angle of change in compass bearing that occurs at the location.

Notes:

  • Do not add a PI curve within the limits of another curve.
  • Do not change the location of a curve to fall within the limits of another curve
  • Update either the location point of the PI Curve or the data attributes associated with the PI Curve. If updating both, input two transactions
  • Do not update if the Signed Highway is incorrect; delete and re-enter the curve record
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Input—PI Curves

Follow these input instructions to add PI curve:

Anchor: #i1008650Add PI Curve

Step

Action

Input

1

(For instructions to log onto the system, click this link)

From the TPP Database Maintenance Menu, select Update-Code 12H and press <E>; the TPP Database Maintenance Submenu appears

 

2

Input X next to PI Curve and press <E>; the PI Curve submenu appears

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3

Input Location Key fields

4

Input remaining fields and press <F2>; the system updates TRM with the new information and displays the message “Transaction completed successfully”

  • Curve Type P
  • Delta Angle measurements:
    • Degrees, whole degree values 000 to 179
    • Minutes, whole minute values 00 to 59
    • Seconds, seconds to one decimal values 00.0 to 59.9
    • Left/Right, direction (L or R)

5
  • To select Baseline Bearing, Normal Curve, or Spiral Curve additions, press <F3> to exit back to the TPP Maintenance Submenu
  • To input another Update-Code, press <F3> twice to exit back to the TPP Database Maintenance Menu
  • To exit back to the TRM Main Menu, press <F10>

(For instructions to log off the system, click this link)

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Follow these input instructions to delete PI curve:

Anchor: #i1008678Delete PI Curve

Step

Action

Input

1

(For instructions to log onto the system, click this link)

From the TPP Database Maintenance Menu, select Update-Code 11H and press <E>; the TPP Database Maintenance Submenu appears

 

2

Input an X next to PI Curve and press <E>; the PI Curve submenu appears

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3

Input Location Key fields

  • Signed Highway System, Number, and Suffix
  • Reference Marker Number and Suffix, (+) or (–) Sign, and Displacement

4

Input Feature Data fields and press <F2>; the system retrieves record data from TRM. A prompting message “Press PF2 to confirm or PF 11 to cancel” appears

Curve Type P

5

Repress <F2> to confirm deletion; the system displays the verification message “Transaction completed successfully” and deletes all data records associated with the deleted PI Curves

OR Press <F11> to cancel deletion; the system takes no action

6
  • To select Baseline Bearing, Normal Curve, or Spiral Curve deletions, press <F3> to exit back to the TPP Maintenance Submenu
  • To input another Update-Code, press <F3> twice to exit back to the TPP Database Maintenance Menu
  • To exit back to the TRM Main Menu, press <F10>

(For instructions to log off the system, click this link)

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Follow these input instructions to update PI curve location:

Anchor: #i1008710Update PI Curve Location

Step

Action

Input

1

(For instructions to log onto the system, click this link)

From the TPP Database Maintenance Menu, select Update-Code 13H and press <E>; the TPP Database Maintenance Submenu displays

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2

Input an X by PI Curve and press <E>; the Update Selection Menu displays

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3

Input an X by Update Attribute Location and press <E>; he PI Curve Data screen displays and a prompt message requests the updated attribute’s location plus any other required fields the system needs to locate the attribute record

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4

Input Location Key fields and press <E>; the system retrieves record data from TRM. A prompting message “Enter new Reference-Marker location” appears

  • Signed Highway System, Number, and Suffix
  • Reference Marker Number and Suffix, (+) or (–) Sign, and Displacement

5

Input update fields and press <F2>; the system updates the location and the verification message “Transaction completed successfully” appears. The original request for the current location to update displays for another update transaction

Reference Marker Number and Suffix and/or Reference Marker Sign (+) or (–) and Displacement

6
  • To select Update Attribute Elements, press <F3> to exit back to the Update Selection menu
  • To select Baseline Bearing, Normal Curve, or Spiral Curve, press <F3> twice to exit back to the TPP Maintenance Submenu
  • To input another Update-Code, press <F3> three times to exit back to the TPP Database Maintenance Menu
  • To exit back to the TRM Main Menu, press <F10>

(For instructions to log off the system, click this link)

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Follow these input instructions to update PI curve attributes:

Anchor: #i1008742Update PI Curve Attributes

Step

Action

Input

1

(For instructions to log onto the system, click this link)

From the TPP Database Maintenance Menu, select Update-Code 13H and press <E>; the TPP Database Maintenance Submenu appears

-

2

Input an X by PI Curve and press <E>; the Update Selection Menu appears

-

3

Input an X by Update Attribute Elements and press <E>; the PI Curve Data screen appears and a prompt message requests the updated attribute’s location plus any other required fields the system needs to locate the attribute record

-

4

Input Location Key fields and press <E>; the system retrieves record data from TRM. A prompting message “Enter Updated Attribute Data” appears

  • Signed Highway System, Number, and Suffix
  • Reference Marker Number and Suffix, (+) or (–) Sign, and Displacement

5

Input update fields and press <F2>; the system updates the attribute and the verification message “Transaction completed successfully” appears. The original request for the current attributes to update displays for another update transaction

Delta Angle measurements:

  • Degrees, whole degree values 000 to 179
  • Minutes, whole minute values 00 to 59
  • Seconds, seconds to one decimal values 00.0 to 59.9
  • Left/Right, direction (L or R)

6
  • To select Update Attribute Location, press <F3> to exit back to the Update Selection menu
  • To select Baseline Bearing, Normal Curve, or Spiral Curve, press <F3> twice to exit back to the TPP Maintenance Submenu
  • To input another Update-Code, press <F3> three times to exit back to the TPP Database Maintenance Menu
  • To exit back to the TRM Main Menu, press <F10>

(For instructions to log off the system, click this link)

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